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Finding the Fourth Proportional to 99.37, 149.68 and 93.29

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Solution

The fourth proportional to 99.37, 149.68 and 93.29 is: 140.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.37 : 149.68 = 93.29 : x
  2. Step 2: Convert to fraction form
    99.37/149.68 = 93.29/x
  3. Step 3: Cross multiply
    99.37x = 149.68 × 93.29
  4. Step 4: Simplify right side
    99.37x = 13,963.79
  5. Step 5: Solve for x
    x = 13,963.79/99.37
  6. Step 6: Final answer
    x = 140.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.